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Home Civil Engineering RCC Structures Design Comments

  • Question
  • A raft foundation is provided if its area exceeds the plan area of the building by


  • Options
  • A. 10%
  • B. 20%
  • C. 30%
  • D. 40%
  • E. 50%

  • Correct Answer
  • 50% 


  • RCC Structures Design problems


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    • 1. If jd is the lever arm and ?O is the total perimeter of reinformcement of an R.C.C. beam, the bond stress at the section having Q shear force, is

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 2. If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of beams 3 m, effective span of beams 6 m, the effective flange width of the beam, is

    • Options
    • A. 200 cm
    • B. 300 cm
    • C. 150 cm
    • D. 100 cm
    • Discuss
    • 3. A flat slab is supported

    • Options
    • A. on beams
    • B. on columns
    • C. on beams and columns
    • D. on columns monolithicaily built with slab
    • E. all the above
    • Discuss
    • 4. On piles, the drop must be at least

    • Options
    • A. 80 cm
    • B. 100 cm
    • C. 120 cm
    • D. 140 cm
    • E. 150 cm
    • Discuss
    • 5. The thickness of the flange of a Tee beam of a ribbed slab is assumed as

    • Options
    • A. width of the rib
    • B. depth of the rib
    • C. thickness of the concrete topping 0d) half the thickness of the rib
    • D. twice the width of the rib.
    • Discuss
    • 6. Though the effective depth of a T-beam is the distance between the top compression edge to the centre of the tensile reinforcement, for heavy loads, it is taken as

    • Options
    • A.
    • B.
    • C.
    • D.
    • E.
    • Discuss
    • 7. A singly reinforced beam has breadth b, effective depth d, depth of neutral axis n and critical neutral axis n1. If fc and ft are permissible compressive and tensile stresses, the moment to resistance of the beam, is

    • Options
    • A.
    • B.
    • C.
    • D. all the above
    • Discuss
    • 8. According to the steel beam theory of doubly reinforced beams

    • Options
    • A. tension is resisted by tension steel
    • B. compression is resisted by compression steel
    • C. stress in tension steel equals the stress in compression steel
    • D. no stress is developed in compression concrete as well as in tension concrete
    • E. all the above.
    • Discuss
    • 9. The spacing of transverse reinforcement of column is decided by the following consideration.

    • Options
    • A. The least lateral dimension of the column
    • B. Sixteen times the diameter of the smallest longitudinal reinforcing rods in the column
    • C. Forty-eight times the diameter of transverse reinforcement
    • D. All the above.
    • Discuss
    • 10. An under-reinforced section means

    • Options
    • A. Steel is provided at the under side only
    • B. Steel provided is insufficient
    • C. Steel provided on one face only
    • D. Steel will yield first.
    • Discuss


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